Abstract
In Meaning and Necessity, Carnap briefly and critically assessed the approaches to definite descriptions associated with the names of Frege, Russell and Hubert and Bernays.2 Ultimately he adopted a version of the Frege approach, now widely known as the chosen object method, in the development of his influential doctrine of meaning and modality. Since Carnap’s discussion, however, another approach to definite descriptions, called free description theory, has emerged. Moreover, Carnap did not concern himself with the question whether there exists a way of understanding the various approaches to definite descriptions such that they can be construed as different options to a common technical problem. Such a way exists in set theory where various approaches can be construed as different options to the paradoxical axiom of set abstraction in naive set theory. That is the task of this essay; to provide a way of understanding both the traditional and free logic approaches to the treatment of definite descriptions such that they all can be seen as different ways out of a common technical problem, a problem manifested in what will be called The Naive Theory of Definite Descriptions.
The quoted expression in the title of this essay is the way Russell defined definite descriptions in Principia Mathematica. Thanks are due to Ermanno Bencivenga for his helpful comments.
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Notes
Rudolf Carnap, Meaning and Necessity, University of Chicago Press, Chicago, Illinois, (1950), pp. 32–39.
H. Leblanc and R. K. Meyer, ‘On Prefacing (∀X) A→A(Y/X) with (∀X) — A Free Quantification Theory Without Identity’, Zeitschr. f. math. Logik und Grundlagen d. Math., 16, (1970), pp. 447–462. Typing limitations require a departure from some of their symbols, but the conventions and definitions of the proof theory remain the same.
See Bertrand Russell, ‘On Denoting’, Mind, XIV, (1905), pp. 479–493.
W. V. Quine, ‘New Foundations for Mathematical Logic’, American Mathematical Monthly 44, 1937, pp. 70–80.
See Karel Lambert, ‘A Theory of Definite Descriptions’ in Philosophical Applications of Free Logic (Ed. K. Lambert), Oxford, London, 1990. This essay is a fusion of two papers published in 1962 and 1964. See, also, Rolf Schock, Logics Without Existence Assumptions, Almqvist & Wiksells, Uppsala, 1968; David Kaplan, ‘What is Russell’s Theory of Descriptions?’ in Physics, Logic and History (Eds. W. Yourgrau et. al.), Plenum, New York, 1970; and Dana Scott, ‘Existence and Description in Formal Logic’, in Bertrand Russell: Philosopher of the Century (Ed. R. Schoenman), Allen & Unwin, London, 1967.
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© 1991 Springer Science+Business Media Dordrecht
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Lambert, K. (1991). A Theory about Logical Theories of “Expressions of the Form ‘The So and So’, Where ‘The’ is in the Singular”. In: Spohn, W. (eds) Erkenntnis Orientated: A Centennial Volume for Rudolf Carnap and Hans Reichenbach. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-3490-3_18
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DOI: https://doi.org/10.1007/978-94-011-3490-3_18
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